package pruebas;

import java.util.Scanner;

import semana3.strings.cadenasdecaracteres.CadenasDeCaracteres;

public class MisProgramas {

	/**
	 * @param args
	 */
	public static void main(String[] args) {

		Scanner scan = new Scanner(System.in);
		String trucos = scan.nextLine();
		CadenasDeCaracteres c = new CadenasDeCaracteres();
		String sol = "";
		for (int i = 0; i < trucos.length(); i++) {
			sol = sol + c.aMinuscula(trucos.charAt(i));

		}
		System.out.println(sol);
	}

}
